Function suppressing mechanism for printing telegraph reperforators



R. E. ARKO 3,414,674 FUNCTION SUPPRESSING MECHANISM FOR PRINTING Dec. 3,1968 TELEGRAPH REPERFORATORS 2 Sheets-Sheet 1 Filed March 15, 1965INVENTOR ROBERT E ARKO ATTORNEY Dec. 3, 1968 R. E. ARKO 3,414,674

FUNCTION SUPPRESSING MECHANISM FOR PRINTING TELEGRAPH REPERFORATORS 2Sheets-Sheet 2 Filed March 15, 1965 United States Patent FUNCTIONSUPPRESSING MECHANISM FOR PRINTING TELEGRAPH REPERFORATORS Robert E.Arko, Mount Prospect, Ill., assignor to Teletype Corporation, Skokie,111., a corporation of Delaware Filed Mar. 15, 1965, Ser. No. 439,712Claims. (Cl. 17892) ABSTRACT OF THE DISCLOSURE In a typing reperforatorof the type including a selector clutch for rotating a plurality ofselector earns, a function clutch for operating the perforator drivingand tape feed mechanisms of the reperforator and a cam rotated inresponse to tripping of the selector clutch for actuating a lever totrip the function clutch, a device for selectively preventing operationof the perforator driving and tape feed mechanisms of the reperforatorcomprising an electromagnet that is actuated upon receipt by thereperforator of predetermined signals and means responsive to actuationof the electromagnet for preventing the lever from tripping the functionclutch upon actuation by the cam.

This invention relates to signal controlled tape perforators and moreparticularly to function suppressing mechanism for perforators preparingtape, a monitor copy of which is being made.

In the preparation of control tapes for use in computers, it isfrequently desirable to provide a monitor copy of the information beingencoded in the tape. Such copy, preferably, is printed on a page printerunder control of the keyboard or other control source that is feedingthe information to the perforator. In order to provide a page typemonitor copy, the keyboard must transmit code combinationsrepresentative of certain functions such as line feed and carriagereturn operations to the monitor printer. However, a computer which isto utilize this tape as an input to it should not receive the signalsrepresentative of code combinations for such functional operations.Consequently, there has been a need for a signal controlled perforatorwhich will respond to code combination signals such as those used inprinting telegraphy and will prepare a tape but will not be perforatedwith code combinations representing certain of the functions which ofnecessity must be transmitted to a printer making a monitor copy of theinformation being perforated in the tape.

The primary object of the invention is the preparation of control tapesfor use as input controls for computers.

Another object of the invention is to provide a reperforator withmechanism for suppressing its operation upon the receipt by it ofcertain predetermined code combination signals.

Still another object of the invention is to provide a reperforator withsignal responsive means for suppressing its functions.

In accordance with the preferred embodiment of the invention, printingtelegraph reperforators as disclosed and claimed in the patent to R. E.Arko-C. W. Swan No. 2,951,902, issued Sept. 6, 1960, has been modifiedto provide an apparatus which will satisfy the objectives set forthhereinbefore. In the apparatus disclosed in the aforementioned patentthe perforation of the control tape is effected under control of aselector mechanism which controls the selection of perforating pins foroperation. This selector mechanism preferably is of the type shown andclaimed in the patent to W. Z. Zenner No. 2,595,745, issued May 6, 1952,and responds to code combinations of signals in its selection of theperforating pins. The signals to which this perforator responds may alsobe applied to a page printer such as the page printer shown and claimedin the patent to W. J. Zenner No. 2,505,729, issued Apr. 25, 1950. Thesignals applied to the perforator and to the page printer may beoriginated at any suitable keyboard mechanism and transmitted through adistributor to the perforator and page printer. Any suitable arrangementmay be provided in the transmitter or keyboard mechanism for closing acircuit upon the operation of certain keys in the keyboard and when akey for a function such as line feed or carriage return is operated inthe control keyboard the circuit is completed to an electromagnet in thereperforator which upon operation will block the tripping of the clutchmechanism in the perforator that controls the functional operations ofthe reperforator. Upon the tripping of the electromagnet in thereperforator the function clutch of the reperforator will not be trippedalthough the signal representative of that function is received in theselector mechanism of the reperforator and the reperforator is set up topunch the code combination in the tape representative of that function.

A more complete understanding of the invention may be had by referenceto the following detailed description when considered in conjunctionwith the accompanying drawings wherein:

FIG. 1 is a side elevational view of a reperforator constructed inaccordance with the present invention, parts being broken away moreclearly to illustrate the physical elements of the apparatus involved inthe invention;

FIG. 2 is a fragmentary perspective view of the function mechanism ofthe reperforator with those parts not necessary to an understanding ofthe present invention eliminated; and

FIG. 3 is a side elevational view on an enlarged scale showing themechanism actuated by the suppress electromagnet to render the functionclutch of the apparatus inoperative.

The present invention in its preferred embodiment utilizes the basicstructure of the aforementioned Arko et al. patent and reference may behad to that patent and to the Zenner patent covering the selectormechanism for details of operation and structural features of thereperforator to which the present invention has been adapted. Byreference to the drawings it will be seen that like reference numeralshave been applied to the same parts throughout the several views. Asillustrated in the drawings a frame 9 is provided on which all of theoperating parts of the apparatus are suitably supported. A main powershaft 12 is suitably journalled in this frame and is driven continuouslyby a motor (not shown).

The selector mechanism 11 receives its motive power from the main powershaft 12. There are two similar clutch mechanisms 10 and 13 associatedwith the main power shaft 12 and one of these clutches, that is clutch10 in FIG. 2, is operable to connect the selector mechanism 11 to themain power shaft 12. The other clutch 13, which may be termed either themain power clutch or the function clutch, serves to supply power foroperating a toggle mechanism 14 (FIG. 1) of the perforator following theselection of function selector slides 15 under control of the selectormechanism 11. Both of these clutches are of the type shown and claimedin the patent to A. N. Nilson et al. No. 2,568,249, issued Sept. 18,

Mounted on the front end of the main power shaft 12 (FIG. 2) is theclutch 10 that serves to transmit power from the shaft 12 to a selectorcam 16 on which a plurality of cams are mounted. This clutch 10 isrendered effective to connect the selector cam sleeve 16 to the shaft 12when a stop projection 17 of a clutch shoe lever, such as that disclosedin the Nilson et a1. patent, is released by an end portion 18 of a stopbail 19. The selector mechanism 11 includes a selector magnet 21 (FIG.1), which upon receipt of a marking or current impulse will attract anarmature 22, and upon receipt of a spacing or no current impulse willrelease the armature 22.

As is common in telegraph transmission, at the start of a signal for anycharacter or any function, the start interval, which is of spacing or nocurrent nature, releases the selector armature 22. The armature 22 thenmoves away from the selector magnet 21 to unlatch a start lever 23,thereby to permit the lever 23 to move clockwise, which motion isimparted to the stop bail 19 in the manner described in said Patent No.2,951,902. This will effect the release or tripping of the clutch whichwill thereby impart rotation to the selector cam sleeve 16.

The selector cam sleeve 16 has on it a series of selector cams such asthe cam 24 (FIG. 1), and also has on it a function clutch trip cam 32.The selector cams 24 and function clutch cam are substantially the sameas the cams described in detail in said Patent No. 2,951,902. Theselector cams have individually associated with them a series of camlevers 33 which are spring urged to engage cam follower portions 34,formed on them, with the peripheries of their respective cams such asthe cam 24. These selector cam levers 33 are pivotally mounted on apivot shaft 35 suitably supported in the frame 9. Any one of theselector cam levers 33 which is permitted to rock clockwise about thepivot shaft 35, due to a marking condition prevailing at the proper timeinterval when the indentation in its respective cam 24 is aligned with acam follower projection 34, will permit a push lever 36 that is slidablyand pivotally mounted on a stationary shaft 37 to rock clockwise underthe influence of its in dividual actuator spring 38. This will cause thefree extremity of the push lever 36 to drop down onto the lowerpush-lever-engaging-shoulder 39 of the selector lever 33. When a pushlever 36 is on the lower shoulder 39 of its associated selector lever33, the push lever will be moved to the left with respect to its pivotshaft 37 as the selector lever 33 is rocked counterclockwise due to itscam follower projection 34 riding up onto the high part of itsrespective selector cam 24.

When a push lever 36 is moved to the left it will en gage a selectorslide latch 41 individual to it and will rock that latch 41 about apivot shaft 42 against the action of a contractile spring 43.

There is one selector slide latch 41 provided for each of the pushlevers 36. Consequently when a push lever 36 is selected and actuated byits associated selector lever 33, a selector slide latch 41 will berocked counterclockwise about its pivot 42. The springs 43 normally holdtheir respective selector slide latches 41 in latching relation with thepunch selector slides 15 provided in the apparatus. One selector slide15 is associated with each of the selector slide latches 41 andcorrespondingly, one selector slide latch 41 is individually associatedwith each one of the selector levers 33.

The selector mechanism 11 serves to select for operation, variousmechanism in the apparatus including punches 44 in a punch mechanism 45which, as mentioned hereinbefore, is basically the same as the punchmechanism disclosed in the aforementioned patent to R E. Arko et al. Thepunch mechanism 45 includes an actuator bail 47 which comprises a crossbar 48 that is rectangular in cross section and is fixed to a pair ofarms 49 pivoted on a shaft 51. The punch actuator bail 47 isoscillatable about the shaft 51 by means of the toggle mechanism 14which comprises a pair of hell cranks 52 fixed to a rockable shaft 53,and a second pair of hell cranks 54 pivoted on the bell cranks 52 andalso pivotally attached to the cross bar 48 of the punch actuator bail47.

Each of the arms 49 of the punch actuator bail 47 is provided with aprojection 55 in which there is formed a slot 56 for receiving a crossbar 57 carried in the bail 47. The cross bar 57 serves as an anchor fora plurality of contractile springs 58 and one contractile spring 58 isprovided for each of the punch selector slides 15 which are slidable onand pivoted for oscillation about the shaft 51 and which are urged bytheir respective springs 58 to move to the left (FIG. 1), Each of theselector slides 15 has a latching portion 59 formed on it whichcooperates with a latching shoulder 61 formed on its associated selectorslide latch 41 so that when the selector slide latch 41 is in theposition shown in FIG. 1 the latching portion 59 of the punch selectorslide 15 will be positioned to engage with the latching portion 61 toprevent an unselected selector slide from moving to the leftsufiiciently to align its head portion 63 with its associated punch 44.However, when the selector slide latch 41 is rocked counterclockwiseabout the pivot shaft 42 by its associated push lever 36, as willpresently appear, the latching shoulder 61 will be moved out of the pathof the latching portion 59 and the spring 58 will be permitted to movethe punch selector slide 15 to the left (when permitted to do so bymember as will be described hereinafter). When a spring 58 moves itspunch selector slide 15 to the left, a shoulder 62 on the slide 15 willextend over the top of the cross bar 48.

When the punch actuator bail 47 is moved upwardly due to the rocking ofthe bell crank lever 52, by its shaft 53 rocking in a counterclockwisedirection (FIG. 1), any of the punch selector slides 15 which have beenselected and released by their associated selector slide latches 41 willbe moved upwardly. In moving to the left from the position shown in FIG.1, a punch selector slide 15 will carry the head portion 63 on it intoposition beneath its associated punch 44 which is slidably mounted in apunch block 71.

The initiation of the movement of the selector slides 15 from theposition shown in FIG. 1 to position to select punches 44 for operationis controlled by the function clutch trip cam 32. This function clutchtrip cam 32 has associated with it a function clutch cam leverassemblage 64 which is actuated by the function clutch trip cam 32. Thelever assemblage 64 is made up of a bell crank lever 65, a latchinglever 66 and an operating lever 67. The bell crank lever 65 and theoperating lever 67 are both mounted for oscillation about a stud shaft68 whereas the latching lever 66 is pivoted on the horizontal arm of thebell crank lever 65. The bell crank lever 65 1s resiliently urged torock in a counterclockwise direction about the stud shaft 68 by acontractile spring 69 thereby to hold a cam follower portion 70 of thebell crank lever 65 in operative contact with the surface of thefunction clutch trip cam 32. The right end (FIG. 1) of the operatinglever 67 extends under a latching shoulder on the latching lever 66 andthe latching lever 66 is urged by a contractile spring 81 to assume theposition shown in FIG. 1 where the shoulder 80 is in latching relationto the operating lever 67. When the shoulder 80 is positioned inlatching relation to the extreme right end of the operating lever 67 andthe function clutch trip cam 32 moves its high portion into engagementwith the cam follower portion 70 of lever 65, lever 65 will be rockedclockwise about the shaft 68 against the action of its spring 69 andconsequently Will pull the latch lever 66 downwardly to cause theoperating lever 67 to rock clockwise about the shaft 68. The operatinglever 67 has a lateral extension 82 formed on it which is aligned withan arm 83 of a four armed lever 84 that is mounted for oscillation onthe pivot shaft 42. A second arm 85 of the four-armed lever 84 has acontractile spring 86 attached to it for urging the lever 84 to rock ina clockwise direction about the pivot shaft 42.

A third arm 87 of the lever 84 terminates in a bifurcation, between theprongs or tines 88 of which rides a lip 89 of the bail member 75 carriedpivotally on the bell crank 54. During the selection period, the slides15 are held in their rightward position (FIG. 1) by the engagement ofthe lip 89 with shoulders 90 formed on said slides. At the end of thelast impulse interval of a signal received in the selector mechanism,the function clutch trip cam 32 will rotate the lever assemblage 64clockwise to impart counterclockwise rotation to the four-armed lever84. The third arm 87 of said lever 84 will, through the prongs or tines88, rotate the bail member 75 clockwise to withdraw the lip 89 thereoffrom the shoulders 90 to permit those slides 15 which have beenunlatched by the selector slide latches 41 to be driven leftwardly bytheir individual springs 58 to position their head portions 63 beneaththe punches 44 that are to be operated. In timed relation with thisoperation, the toggle mechanism 14 will be operated to raise the bar 48(and engaged punch selector slides 15) and to move the bell crank 54leftward, thus also moving the bail member 75 leftwardly. The prongs ortines 88 are of sufiicient length to permit this leftward movement ofthe lip 89 without disengaging the third arm 87 from the lip 89. Beforethe toggle mechanism 14 is returned to the position shown in FIG. 1, thelever 84 will have been returned to its position as shown in FIG. 1 andconsequently, will have rotated the bail member 75 counterclockwise toraise the lip 89 thereof again into the path of the shoulders 90, sothat upon completion of the return movement (rightwardly) of the togglemechanism 14 including the bail member 75 the selector slides 15 will beengaged by the lip 89 and returned to their rightward position as shownin FIG. 1 where they will be in position to be caught by the selectorslide latches 41.

The operation of the toggle mechanism 14 is controlled by the functionclutch mechanism 13 in the following manner: As the function clutch tripcam 32 rotated to position to actuate the lever assemblage 64 andthereby impart counterclockwise rotation to the fourarmed lever 84, afourth arm 91 of the lever 84 will rock counterclockwise to effect itsdisengagement from a clutch release lever 92 fixed on a rock shaft 93.Also fixed to the rock shaft 93 is a function clutch latch lever 94terminating in a laterally directed portion 95 which is normally inblocking relation with a clutch shoe lever 96. Rock shaft 93 carryingthe clutch release lever 92 and function clutch latch lever 94 thereonis normally biased in a counterclockwise direction by a spring 97attached to an arm 98 on lever 92. Thus, when the arm 91 of the lever 84is rotated out of blocking relation with the arm 92, the shaft 93 ispermitted to rock counterclockwise to impart similar motion to latchlever 94 thereby withdrawing the portion 95 of latch lever 94 out of thepath of the clutch shoe lever 96. This will trip the clutch 13 andpermit it to engage and drive a function cam sleeve 99 (FIG. 2) througha complete cycle of rotation.

Also fixed to the rock shaft 93 is a restoring lever 106 (FIG. 2) whichcooperates with a stud 107 on a cam disc 108 fixed to the cam sleeve 99and which will rock the shaft 93 in a clockwise direction to rock thelever arm 92 clockwise sufficiently to permit the lever arm 91 to berocked beneath the end of the arm 92. This will cause the functionclutch latch lever 94 to be rocked in a clockwise direction to bring theportion 95 thereof into blocking relation with the clutch shoe lever 96and thus restore the clutch tripping mechanism to its normal nonoperatedcondition with arm 91 of lever 84 again in blocking relation with arm 92as shown in FIG. 1. Therefore, as the clutch 13 is tripped in the justdescribed manner, the cam 108 together with a cooperating cam disc 109on the function cam sleeve 99 will cooperate with a main power or rockerbail 110 which will in turn, through a link 111 which is connected tothe bail 110 by a post 112, rock the shaft 53 thereby to operate thetoggle mechanism 14 (FIG. 1) back and forth through a complete cycle ofoscillation.

The shaft 53 in addition to effecting the operations describedhereinbefore, will, in oscillating its bell crank levers 52, effect thefeeding of a short length of tape to the punch block 71. This operationis effected by a toothed feed wheel113, the teeth of which are engagedin feed hole perforations in the tape (not shown). The tape is fedthrough a tape guide 114 into engagement with the feed wheel 113 that ismounted on a drive shaft 115. The drive shaft 115 ha fixed to it aratchet wheel 116 which is driven by a driving pawl 117. The pawl 117 ispivotally mounted on one of the bell crank levers 52 and is urged intoengagement with the ratchet wheel 116 by a contractile spring 118. Thus,upon each tripping of the function clutch 13 the pawl 117 will first bemoved to position to engage with successive teeth on the ratchet wheel116 and then on the return movement of the bell crank 52 will advancethe tape one increment of movement.

Thus far in the description the ordinary operation of the apparatus hasbeen described when the selector mechanism 11 is receiving codecombination signals representative of characters to be represented inthe tape. When a perforator is to be used in the preparation of tape foruse in computers the functional operations such as carriage return andline feed code combinations of perforations should not be formed in thetape nor should the tape be advanced. This is true although suchfunctional signals are necessary for the operation of a page printermechanism which is to print a monitor copy of the information to beperforated in the tape for use by the computer.

When function signals are received in the selector mechanism 11 theselector magnet 21 will respond to these signals and consequently byselectively actuating its armature 22 will cause the selector cam levers33 to rock clockwise into the lower portion of their respective selectorcams 24. As the receiving cycle of the perforator continues, thoseselector levers 33 that have been selected for operation will actuatethrough respective push levers 36 and trip through respective selectorslide latches 41 to release the punch selector slides 15 for movement tothe left.

In order to prevent the perforation of code combinations in the taperepresenting these functions, the tripping of the function clutch 13 isprevented. This suppression of punching of the functions is effected byrocking the latching lever 66 about its pivotal connection with theoperating lever 67 thereby to move the latching shoulder 80 out of theposition shown in FIGS. 1 and 2 and into the position shown in FIG. 3.This result is accomplished by energizing an electromagnet 123 suitablymounted on the frame 9 of the perforator. The electromagnet 123 uponbeing energized will attract its armature 124 to the right (FIGS. 1 and3). The armature 124 is fixed to an armature lever 125 that is pivotedat 126 and is urged to rotate clockwise by a contractile spring 127. Thelower end of the armature lever 125 normally comes to rest on a shoulder128 (FIG. 3) of a latch lever 129 with the left face of the armaturelever 125 bearing against a surface 130 formed on the latch lever 129.The latch lever 129 is urged to rotate in a clockwise direction about apivot stud 131 by a contractile spring 132 and in tending to move in aclockwise direction will move a second shoulder 133 on it against theend of the armature lever 125 as soon as the electromagnet 123 isenergized. Energization of the electromagnet 123 will cause the armaturelever 125 to engage the latching lever 66 and rock it clockwise withrespect to the horizontal arm of the bell crank lever 65. When thisoccurs the latching shoulder 80 on lever 66 will be moved out ofposition to be engaged by the end of the operating lever 63.

As a consequence of the operation just described a signal received inthe apparatus representing one of the function operations will cause theselector mechanism 11 to go through a complete cycle but when thefunction clutch trip cam 32 rocks the bell crank lever 65, the bellcrank lever 65 will not actuate the operating lever 67 due to the factthat the signal being received in the apparatus will also cause theelectromagnet 123 to be energized to break down the leverage mechanism64 and render it inoperative to trip the function clutch 13.

Any suitable mechanism may be provided for energizing the electromagnet123 momentarily upon the receipt in the perforator of a functionrepresenting code combination signal. A character recognition circuitindicated generally at 135 may comprise such a device which operatesunder control of the input keyboard transmitting signals to theperforator. When the electromagnet 123 is energized momentarily, tosuppress the perforating of a code combination, it will cause thearmature lever 125 to move clockwise off of the shoulder 128 thereby torock the latching lever 66 clockwise about its pivot. This will causethe shoulder 80 to be moved out of the path of the right end of theoperating lever 67. The armature lever 125 in moving off of the shoulder128 on latch lever 129 will permit the spring 132 to rock the latchlever 129 clockwise so that the lower end of the armature lever 125 willcatch on the second shoulder 133 where it will be u held until the endof the shoulder 80 is moved past the extreme right end of the operatinglever 67. The armature lever 125 will thereby be latched in itsattracted position even though the electromagnet 123 is deenergized andthe armature lever 125 will remain latched until the function trip cam32 has rocked the bell crank lever 65 through an appreciable distancewhereupon a pin 136 on the latch lever 66 will engage the upper surfaceof the latch 129 to rock the latch 129 counterclockwise against theaction of its spring 132. This will occur after the edge of the shoulder80 has passed the right end of the operating lever 67 and will restorethe apparatus to the condition shown in FIG. 1. Obviously the justdescribed operation will take place on each cycle of the function clutchtrip cam 32 but will have no effect on the operation of the functionmechanisms unless the electromagnet 123 had been momentarily energized.

Although a particular embodiment'of the invention is shown in thedrawings and described in the foregoing specification it will beunderstood that the invention is not limited to that specific embodimentbut is capable of modification and rearrangement, and substitution ofparts and elements without departing from the scope of the invention.

What is claimed is:

1. In a signal controlled tape perforator;

a selector mechanism responsive to incoming signals;

a plurality of operating instrumentalities;

means selectively actuated by said selector mechanism for setting saidoperating instrumentalities for operation;

means for operating the said instrumentalities ineluding:

power means,

means in said selector mechanism for initiating a cycle of operation ofsaid power means in each cycle of the selector mechanism, and

means selectively operable after the selector mechanism has set saidinstrumentalities for operation and independent of said selectormechanism for disabling the means for initiating a cycle of operation ofthe power means.

2. In a signal controlled tape perforator;

a selector mechanism responsive to incoming signals;

a plurality of operating instrumentalities;

means selectively actuated by said selector mechanism for setting saidoperating instrumentalities for operation;

means for operating the said instrumentalities including:

power means,

cam means in said selector mechanism moved through a cycle of operationin each cycle of the selector mechanism,

an oscillatable lever moved through a cycle of oscillation by said cammeans on each cycle of operation of said cam means,

an operating lever operative to initiate a cycle of operation of saidpower means to operate said instrumentalities,

a latching lever normally connecting the oscillatable lever to theoperating lever, and

means operative to move said latching lever from its normal position todisconnect the operating lever from the oscillatable lever thereby tosuppress operation of said power means.

3. The device according to claim 2 further including means actuated bythe oscillatable lever for restoring the latching lever to its normalposition.

4. The device according to claim 2 further including means for holdingthe latching lever out of its normal position for a predeterminedinterval andmeans on the latching lever for disabling the holding meansafter said interval.

5. In combination in a tape perforator,

signal responsive means;

a plurality of punches;

latch means controlled by the signal responsive means;

punch selector slides conditioned for operation by said latch means;

tape feeding means;

means for actuating said feeding means and the conditioned ones of saidselector slides;

function clutch means for controlling said actuating means;

initiating means in said signal responsive means for initiatingoperation of said function clutch means; and

means for disabling said initiating means to suppress operation of saidactuating means.

6. In combination in a tape perforator,

signal responsive means;

a plurality of punches;

latch means controlled by the signal responsive means;

punch selector slides conditioned for operation by said latch means;

tape feeding means;

means for actuating said feeding means and the conditioned ones of saidselector slides;

function clutch means for controlling said actuating means;

initiating means in said signal responsive means for initiatingoperation of said function clutch means including a cam lever invariablyactuated upon receipt of asignal in the signal responsive means; meansfor disabling said initiating means to suppress operation of saidactuating means including an operating lever for tripping said functionclutch,

a latching lever for latching said operating lever to said cam lever,and

means for disabling said latching lever to suppress operation of saidfunction clutch.

7. The device according to claim 5 wherein the means for disabling theinitiating means is a latch for normally maintaining the initiatingmeans effective and for actuation to disable the initiating meansthereby suppressing operation of the actuating means.

8. The device according to claim 5 wherein the initiating means and thedisabling means are:

a function trip cam in said signal responsive means;

and

a function clutch cam lever assemblage for actuation by said functiontrip cam including:

a bell crank lever and an operating lever mounted on a common pivot,said bell crank lever having a cam follower portion in engagement withsaid cam and said operating lever normally blocking operation of thefunction clutch means,

a latching lever pivoted on said bell crank and 9 biased to latch theoperating lever to the bell crank lever for actuation thereby, andelectromagnetically actuated means for rocking said latching lever outof latching engagement with said operating lever to prevent tripping ofsaid function clutch means.

9. A device for receiving code combinations and for recording the codecombinations on a record medium including:

a plurality of recording members;

signal responsive means for selecting predetermined ones of theplurality of recording members in response to received codecombinations;

recording means for causing the selected ones of the plurality ofrecording members to make a recording corresponding to the received codecombination on the record medium;

interconnecting means driven by the signal responsive means for causingthe recording means to operate; and

means for disabling the interconnecting means thereby preventing therecording of the received code combination.

10. The device according to claim 9 wherein the recording means includesmeans for advancing the recording medium to provide spacing for therecording so that the disabling means also prevents spacing of therecord medium.

References Cited UNITED STATES PATENTS 1,936,956 11/1933 Rothermel178----92 2,352,060 6/1944 Wusteney et al. 17892 3,301,954 1/1967Krakusky 178-92 THOMAS A. ROBINSON, Primary Examiner.

